Loom.



Patented'llec. l2, I899. W. McMICHAEL.

LUDII.

(A plicltion filed Jan. 20, 1698.)

(No' Model.)

INS/ENTER.

' STARS i IVILLIAM MOMICHAEL, OF \VOONSOOKET, RHODE ISLAND, ASSIGNOR OF ONE-THIRD TO LOUIS BALLOU SVVEATT, OF SAME PLACE.

LOOM.

SPECIFICATION forming'part of Letters Patent N 0. 638,935, dated December 12, 1899.

Application filed January 20, 1898. Serial No. 667,189. (No model.)

To all whom it may concern:

Be it known that 1, WILLIAM MOMICHAEL, of Woonsocket, in the county of Providence and State of Rhode Island, have invented new and useful Improvements in Looms; and I hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming part of this specification.

This invention has reference to an improvement in the picker motion of looms whereby the shuttle is thrown from one side of the loom to the other to lay the weft or filling.

The invention consists in the peculiar and I 5 novel construction of a lever provided with a shoe and operated by a wiper rotated by a shaft, preferably the crank-shaft, of the loom,

and connections between the lever and the picker whereby the shuttle is thrown, as will be more fully set forth hereinafter.

Figure 1 is a side View of parts of a loom, showing the lever operated from the crankshaft and connected with the picker. Fig. 2 is a front View of part of a loom, partly in section, showing one end of the lay and the connections with the operating-lever and the picker.

In the drawings, 3 indicates the end frame of the loom; 4, the lay; 5, the crank-shaft of the loom; 6, the pitman connecting the lay with the crank of the crank-shaft; 7, the wiper, a projection of the pitman provided with a roller, and 8 the picker-lever pivoted on a stud secured to the end frame 3 and pro- 3 5 vided at its upper end witha sleeve or bracket to which the shoe 9 is adjustably secured. The lower end of the lever 8 is connected by means of a bolt with the slotted end of the lever 10, pivotally supported on a stud secured to the end frame. The opposite end of the lever 10 is connected by a flexible connection with the picker-stick 11, pivotally secured on the bracket 12, extending from the lay. The heel of the picker-stick is connected with the lay by the coiled spring 13.

When the lever lO'is connected with the picker-stick 11, the cord 14 or other flexible connection extends from the lever 10 over a suitable roller 15, supported on the'lay, and

is connected with the picker-stick 11 at one of the holes, (shown in Fig. 2,) the end 16 of the picker-stick 11 extending through the picker 1'7.

The picker mechanism described is located on each side of the loom and is operated by the two cranks of the crank-shaft.

I do not wish to confine myself to the exact construction of the parts herein shown and described, as they may be varied to suit the construction of the loom and, the conditions under which the same is operated.

To enable others skilled in the art to use and apply my invention, I will now more fully describe the operation of the same.

In a loom the warp is operated by the harnesses to open the shed as the lay moves backward. The shutile 18, (indicated in broken lines in Fig. 2,) has to be thrown through the opened warp-shed from one side of the loom to the other while the lay is at, or nearly at, the farthest point of its backward swing. As the cranks of the crank-shaft in their rotation operate the lay, I provide, in the preferred form, each pitman connecting the lay with the cranks with a wiper 7, and as these wipers rotate with the cranks of the crank-shaft I place in the path of each wiper the shoe 9, which has a curved face against which the wiper strikes and which it follows to move the shoe backward as the wiper rotates with the crank until it leaves the toe end of the shoe near the farthest backward movement of the wiper. The shoe is provided with a slotted arm and is adj ustably secured to the upper end of the lever 8 by a bolt. The end of the lever 8 above the pivotal support is shorter in the preferred form than the portion of the lever below the pivotal support, and the lever 8 is connected to the slotted arm of the lever 10, which is also shorter than the opposite arm of the lever, so that the movement of the upper end of the lever 8 is transmitted to the end of the lever 10, connected with the picker, and increased.

It is desirable in the throwing of a shuttle 5 across the loom to start the shuttle, and as it moves to increase the speed of the picker, and this accelerated motion is secured by connecting the lever 8 with the slotted arm of the lever 10, by which the bolt 8, secured to the end of the lever 8, slides in the slot of the lever 10 toward the fulcrum of this lever and accelerates the movement of the oppositeend of the lever, and thereby the movement of the picker 17 and the shuttle.

In the preferred form I connect the flexible connection 14 to the picker-stick 11 to operate the picker, as shown in Fig. 2; but the end of the lever 10 may be connected directly with the picker 17 by locating the roller 15 in a higher position on the lay and carrying the flexible connection from the end of the lever 10 over the roller 15 and connecting the same with the picker.

Having thus described my invention, 1 claim as new and desire to secure by Letters Patent- 1. In a loom, the combination with the lay, the picker carried on the lay, the crank-shaft, and the pitman connecting the lay with the crank-shaft, of the wiper 7, the lever 8, the shoe 9 secured to the lever, the slotted lever 10, the bolt 8 extending through the slot and connecting the levers 8 and 10, and mechanism, substantially as described, connecting" the end of the lever 10 with the picker; whereby the picker is moved with accelerated motion to throw the shuttle, as described.

2. In a loom, the combination with the lay t, the crank-shaft 5, the pitman 6, and the wiper 7, of the lever 8, the shoe 9 adjustably secured to the end of the lever 8, the slotted lever 10 connected with the lever S, the pickerstick 11 pivotally supported on the lay, a flexible connection between the end of the lever 10 and the picker-stick 11, the picker 17, and the coiled spring 13; whereby, as the lay approaches theend of its inward swing, the wiper operates the lever 8 and through it the picker mechanism to throw the shuttle, as described.

In witness whereof I have hereunto set my hand.

WILLIAM MCHICHAEL.

Y Vitnesses:

JOSEPH A. MILLER, J12, B. M. SIMMs. 

